You want to run your own private relay so that you can't get rugged. You want to run your own private relay so you can't get censored. You run your own relay so that you're in charge of your own data and you have a backup of your own data. At any time, you can re-broadcast your notes and events to any other relay.
Discussion
Whats the easiest way to set up and maintain a relay?
The easiest way is to probably use your Umbrel node. It's one button click install. Though not everyone has an Umbrel node. I use https://github.com/cameri/nostream
Is it a good idea to run a relay on a raspberry pi?
Isn’t this ressources intensive?
Any benchmark yet showing the consumption of a relay given xxx users connected to it?
If it's a private relay? Absolutely it can be done. Many people are doing it right now.
Hope you're all patched up